{"id":"CVE-2026-115215","aliases":["EUVD-2026-115638","GHSA-3p2g-x7hh-3w4c"],"status":"published","title":"NetX Secure DTLS server allocates a session for each new source before the cookie exchange and never reclaims it, so spoofed datagrams exhaust the session pool","description":"In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00412,"percentile":0.35961,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770","CWE-772"],"published":"2026-11-02T21:43:53Z","modified":"2026-11-03T16:13:37Z","products":[{"vendor":"eclipse foundation","product":"eclipse threadx"}],"references":[{"url":"https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-3p2g-x7hh-3w4c","tags":["advisory"]},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/487","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115215.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115215","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-115215","title":"NetX Secure DTLS server allocates a session for each new source before the cookie exchange and never reclaims it, so spoofed datagrams exhaust the session pool","description":"In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.","status":"published","published":"2026-11-02T21:43:53.639Z","modified":"2026-11-06T17:58:51.59Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-770","CWE-772"],"updated_at":"2026-11-06T18:59:07.714367Z"}],"euvd":[{"id":"EUVD-2026-115638","description":"In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.","status":"published","published":"2026-11-02T21:43:53Z","modified":"2026-11-06T17:58:51Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-06T19:05:52.672747Z"}],"nvd":[{"id":"CVE-2026-115215","description":"In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.","status":"published","published":"2026-11-02T22:17:18.397Z","modified":"2026-11-06T18:17:55.43Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-770","CWE-772"],"updated_at":"2026-11-06T20:01:16.432914Z"}],"osv":[{"id":"CVE-2026-115215","title":"NetX Secure DTLS server allocates a session for each new source before the cookie exchange and never reclaims it, so spoofed datagrams exhaust the session pool","description":"In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.","status":"published","published":"2026-11-02T21:43:53.639Z","modified":"2026-11-08T02:30:53.755819714Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-770","CWE-772"],"updated_at":"2026-11-07T03:08:00.941926Z"}]}}